Rainbow Electronics AT27C800 - Manual (Page 8)

AT27C800
8
Notes: 1. V
cc
must be applied simultaneously or before V
PP
and removed simultaneously or after V
PP
.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven—
see timing diagram.
3. Program Pulse width tolerance is 50 µs
±
5%.
AC Programming Characteristics
T
A
= 25 ± 5°C, V
CC
= 6.5 ± 0.25V, V
PP
= 13.0 ± 0.25V
Symbol Parameter Test Conditions (1)
Limits
Units Min Max
t
AS
Address Setup Time
Input Rise and Fall Times:
(10% to 90%) 20 ns
Input Pulse Levels:
45V to 2.4V
Input Pulse Levels:
0.8V to 2.0V
Input Timing Reference Level:
0.8V to 2.0V
Output Timing Reference Level:
0.8V to 2.0V
2 µs
t
OES
OE Setup Time 2 µs
t
DS
Data Setup Time 2 µs
t
AH
Address Hold Time 0 µs
t
DH
Data Hold Time 2 µs
t
DFP
OE High to Output Float Delay (2) 0 130 ns
t
VPS
V
PP
Setup Time 2 µs
t
VCS
V
CC
Setup Time 2 µs
t
PW
CE Program Pulse Width (3) 47.5 52.5 µs
t
OE
Data Valid from OE 150 ns
t
PRT
BYTE /V
PP
Pulse Rise Time During
Programming
50 ns
Atmel’s 27C800 Integrated Product Identification Code
Codes
Pins
Hex Data
A0 O15 O14 O13 O12 O11 O10 O9 O8
O7 O6 O5 O4 O3 O2 O1 O0
Manufacturer 0 0 0 0 1 1 1 1 0 1E1E
Device Type 1 1 1 1 1 1 0 0 0 F8F8